CN211071645U

CN211071645U - Cold heading forming die assembly for passenger car engine oil delivery pipe bolt

Info

Publication number: CN211071645U
Application number: CN201920612821.9U
Authority: CN
Inventors: 金烨炯; 张国信
Original assignee: SHANGHAI SQB AUTOMOTIVE FASTENERS Ltd
Current assignee: SHANGHAI SQB AUTOMOTIVE FASTENERS Ltd
Priority date: 2019-04-30
Filing date: 2019-04-30
Publication date: 2020-07-24
Anticipated expiration: 2029-04-30

Abstract

The utility model relates to a cold heading forming die component of a passenger car engine oil delivery pipe bolt; the method is characterized in that: the cold heading die assembly comprises a first procedure cold heading die assembly, a second procedure cold heading die assembly, a third procedure cold heading die assembly, a fourth procedure cold heading die assembly and a fifth procedure cold heading die assembly; each process cold heading die combination comprises a stamping die and a main die; the end face of the first cold heading process die combined blank forms an inner concave face; the die assembly in the second cold heading process further deepens the inner concave surface of the end surface of the cylindrical blank and forms a blind hole; the third cold heading process die is combined on the other end surface of the cylindrical blank to form a bolt head structure; the fourth cold heading process die is combined on the material body of the cylindrical blank to form a spiral blank; and the fifth cold heading process die combination is used for cold heading the cylindrical blank to form the final part. This mould subassembly adopts one shot cold forming extrusion technique, the process of machining that can significantly reduce to use the material that is close with finished product weight to come the shaping product, this cold forming process improves material utilization greatly, and guarantees that product mechanical properties is stable.

Description

Cold heading forming die assembly for passenger car engine oil delivery pipe bolt

Technical Field

The utility model relates to a passenger car engine makes the field, specifically is a cold-heading forming die subassembly of passenger car engine oil delivery pipe bolt.

Background

The product is a machine oil delivery oil pipe bolt which is matched with Shanghai Sanda automobile accessory limited company and is installed on a passenger car engine.

The modeling of the engine oil delivery pipe bolt refers to the cold heading stations 1-5 of FIG. 1. The oil pipe vertical hole of the passenger car engine oil conveying oil pipe bolt product is an intersecting hole tubular part, the common conventional manufacturing process is single machining, and finished wire raw materials are machined to the required size in a machining mode. The process method has the advantages of low material utilization rate, poor stability of machining performance, long single-piece machining time and low efficiency.

Disclosure of Invention

The utility model aims to overcome foretell defect, provide a machining process that significantly reduces can realize engine oil fast, effectively and carry the cold-heading forming die subassembly that oil pipe bolt processing was made.

In order to achieve the above object, the present invention is realized as follows:

a cold heading forming die assembly for a passenger car engine oil delivery pipe bolt comprises a first cold heading process die combination, a second process cold heading die combination, a third process cold heading die combination, a fourth process cold heading die combination and a fifth process cold heading die combination; each process cold heading die combination comprises a punch die capable of reciprocating and a main die which is fixed relative to the punch die; the first cold heading process die assembly forms an inner concave surface on the end surface of one end of the cylindrical blank in a cold heading mode; the die assembly in the second cold heading process further deepens the inner concave surface of the end surface of the cylindrical blank in a cold heading mode to form a blind hole; the third cold heading process die assembly forms a bolt head structure on the other end face of the cylindrical blank on which the blind hole is formed in a cold heading mode; forming a spiral blank on the material body of the cylindrical blank by the fourth cold heading process die combination in a cold heading mode; the fifth cold heading process die assembly is used for cold heading the cylindrical blank to form a final part on the basis of the fourth cold heading process die assembly in a cold heading mode; the five-process die assembly is fixed in a multi-station cold header side by side, and the die reciprocates through the operation of the cold header; in the process that the stamping die moves to the bottom dead center, the stamping die continuously approaches the fixed main die, so that the blank in the main die is extruded and molded, and the molding process of the blank is completed when the blank reaches the bottom dead center; and in the process of moving to the top dead center, the blank molded at the current station ejects the main die through the ejection mechanism in the main die, and is conveyed to the next station through the automatic clamp, and the molding of the next station is completed when the die moves to the bottom dead center again, until all 5 stations are completed, the blank can be molded to the required size and shape.

Passenger car engine oil delivery pipe bolt's cold-heading forming die subassembly, the cold-heading process of multistation cold-heading machine is simultaneously carried out the cold-heading to 5 different stocks in 5 stations, just can form 1 product promptly in the cold-heading.

The die assembly adopts a one-step cold forming extrusion technology, can reduce machining processes, and uses materials close to the weight of finished products to form the products, no waste is generated in the cold heading process, and the material utilization rate can be improved by 75%; the multi-station cold heading machine is used for manufacturing, the cold heading process can reach more than 50 pieces/min, the processing speed is improved, the production efficiency is high, and the mechanical property of the product is stable. Meanwhile, the blank is made of SWRCH35K alloy steel material, the design requirement is completely met, the strength grade of mechanical property reaches 8.8 grade, and the tensile strength is as follows: 800MPa min, meets the requirement of the friction coefficient of screwing during assembly and has no oil seepage.

Drawings

FIG. 1 is a schematic view showing a preform molding sequence.

Fig. 2 is a schematic structural view of each mold assembly.

Detailed Description

The invention is further illustrated by the following specific examples.

As shown in fig. 1 and 2, a cold-heading forming die assembly for a passenger car engine oil delivery pipe bolt comprises a first cold-heading process die assembly 1, a second process cold-heading die assembly 2, a third process cold-heading die assembly 3, a fourth process cold-heading die assembly 4 and a fifth process cold-heading die assembly 5; each process cold heading die combination comprises a die part 6 capable of reciprocating and a main die part fixed relative to the die part 6; the first cold heading process die assembly 1 forms an inner concave surface on the end surface of one end of the cylindrical blank in a cold heading mode; the second cold heading process die assembly 2 further deepens the inner concave surface of the end surface of the cylindrical blank in a cold heading mode and forms a blind hole; the third cold heading process die assembly 3 forms a bolt head structure on the other end face of the cylindrical blank with the blind hole in a cold heading mode; the fourth cold heading process die assembly 4 forms a spiral blank on the material body of the cylindrical blank in a cold heading mode; the fifth cold heading process die assembly 6 is used for cold heading the cylindrical blank to form a final part on the basis of the fourth cold heading process die assembly 4 in a cold heading mode; the five-process die assembly is fixed in a multi-station cold header side by side, and the die reciprocates through the operation of the cold header; in the process that the stamping die moves to the bottom dead center, the stamping die continuously approaches the fixed main die, so that the blank in the main die is extruded and molded, and the molding process of the blank is completed when the blank reaches the bottom dead center; and in the process of moving to the top dead center, the blank molded at the current station ejects the main die through the ejection mechanism in the main die, and is conveyed to the next station through the automatic clamp, and the molding of the next station is completed when the die moves to the bottom dead center again, until all 5 stations are completed, the blank can be molded to the required size and shape.

Claims

1. The utility model provides a cold-heading forming die subassembly of passenger car engine oil delivery pipe bolt, characterized by: the method comprises a first cold heading process die combination, a second process cold heading die combination, a third process cold heading die combination, a fourth process cold heading die combination and a fifth process cold heading die combination; each process cold heading die combination comprises a punch die capable of reciprocating and a main die which is fixed relative to the punch die; the first cold heading process die assembly forms an inner concave surface on the end surface of one end of the cylindrical blank in a cold heading mode; the die assembly in the second cold heading process further deepens the inner concave surface of the end surface of the cylindrical blank in a cold heading mode to form a blind hole; the third cold heading process die assembly forms a bolt head structure on the other end face of the cylindrical blank on which the blind hole is formed in a cold heading mode; forming a spiral blank on the material body of the cylindrical blank by the fourth cold heading process die combination in a cold heading mode; the fifth cold heading process die assembly is used for cold heading the cylindrical blank to form a final part on the basis of the fourth cold heading process die assembly in a cold heading mode; the dies of the five processes are combined and fixed in a multi-station cold header side by side, and the dies reciprocate through the operation of the cold header.

2. The cold heading forming die assembly for the passenger vehicle engine oil conveying pipe bolt according to claim 1, wherein the cold heading forming die assembly comprises: the one-time cold heading process of the multi-station cold heading machine is used for simultaneously carrying out cold heading on 5 different blanks in 5 stations, namely 1 product can be formed by one-time cold heading.